Glue compound



UNITED STATES PATENT OFFICE.

ROBERT IV. JOHNSON, OF ELIZABETH, NEIV JERSEY.

GLUE COMPOUND.

SPECIFICATION forming part of Letters Patent No. 415,207, dated. November 19, 1889.

Application filed February 2'7, 1889- Serial No. 301,354. (Specimens) To all whom it may concern- Be it known that I, ROBERT W. JOHNSON, a citizen of the United States of America, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Composition of Matter, of which the following is a specification.

My invention relates to improvements in minor plastics; and the objects of my improvement are to impart to dissolved glue or gelatine a permanent elasticity, with firmness or temper unaffected by the various conditions of the atmosphere or its temperature, so as to adapt it to a great many purposes as, for example, in the manufacture of printers rollers, corks or stoppers, soap, medical plasters, and pills; in the covering or coating of fabrics, clothing, and paper; in the manufacture of cement, flexible glue, (KUC.

My composition consists of the following ingredients combined, for the greater number of purposes, in the following proportions: equal parts of glue, glyoerine, and sulpholeate of sodium or other sulpholeic acid previously neutralized with an alkali. These proportions appear to be the most suitable when the compound is to be used in thin sheetsas for coating plasters, pills, fabrics, 850.; but when used in thick layersas in the manufacture of printers rollers, corks, or stoppers, &c.-I prefer to use the following proportions: glue, one pound; glycerine, three-quarters of a pound; sulpholeate of sodium, (or of potash or of ammonia-,) three-quarters of a pound.

In said compound various substances can be incorporated to reduce the cost of the article produced. For example, in printers rollers pigments, ground barks, or woods can be used for that purpose, and also to modify their consistence.

. My compound above stated is prepared by dissolving the glue or gelatine in the smallest possible amount of Water or moisture with heat, as steam, to which is added an equal amount of glycerine, and the two elements are thoroughly mixed, and then the sulpholeate of sodium is added, and the whole is heated or boiled until the bulk of the moisture used to soften the glue is driven out and the whole is thoroughly mixed and combined. The consistence is diminished, if desired, by the addition of more glycerine or more sulpholeate of sodium.

Then the compound is spread in a thin sheet upon paper or upon fabrics, it is rendered nearly insoluble by dipping it in or treating it with bichromate of potash or chromic acid.

The compound can also be used in combination with Vaseline, lard, castor-oil, and other oils or fats.

I am aware that glue and glycerine have been combined for various purposes either alone or with other substances different from sulpholeic acid neutralized with an alkali.

\Vhat I claim, and desire to secure by Letters Patent, is

The herein-described composition of matter, consisting of glue, glycerine, and sulpholeic acid previously neutralized with an alkali, substantially as described.

In testimony whereof I aflix mysignature in presence of two witnesses.

ROBERT \Y. JOHNSON.

Witnesses:

A. II. SCHUYLER, 'lnos. G. PHINNY. 

